Found naked pics - should i tell his wife

by Mike
(Nashville)

I've been living with a girl for a year, had many many fights about her texting inappropriate things to other men, and recently discovered that she's been sending naked pics of herself to another guy. Our relationship is now over, but my question is should I tell the other guy's wife he's been sexting and receiving naked pics from my ex gf? If I were in her shoes I would want to know.